Table 1:

Cognitive tests included in the study

Name	Description	Score range
Immediate word recall	The interviewer read one of four possible lists of 10 nouns to the respondent. The lists do not overlap in word content and the initial list was randomly assigned to the respondent, in a longitudinal manner such that each respondent was assigned a different set of words in each of four successive waves of data collection. The respondent was asked to recall the nouns previously presented	0–10
Delayed word recall	After approximately 5 minutes of asking other survey questions (e.g., depression, and cognition items including backwards count, and serial 7’s) the respondent was asked to recall the nouns previously presented as part of the immediate recall task	0–10
Serial 7’s task	The interviewer asked the respondent to subtract 7 from 100, and continue subtracting 7 from each subsequent number for a total of five trials	0–5
Backwards count	Respondents were asked to count backwards for 10 continuous numbers beginning with the number 20	0–2